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I think there is a good chance you blew your N3 fuse when you changed the battery. This happens when you let the positive cable touch ground when you change the main battery and your aux battery is still connected. This cuts off power to the aux battery and system electronics. Here's a...

Move the IBS to the main battery along with the factory ground cables. Your wiring should match the diagram. If and when you re-install the Genesis system, leave the IBS on the main battery.

With your ground cable disconnected from the battery, measure the resistance of the cable to the body ground. It should be 0 ohms. Also, the N4 terminal connects through a 150 A fuse just like the N3 terminal. The N4 terminal is typically unused and as a work around for a blown N3 fuse, you...

I never found a way to check which software version is installed other than loading the upgrade file from a thumb drive and starting the process. It will report the current version when it starts. The last upgrade I'm aware of corrected the clock which would loose 4 seconds per day before the...

You have the roles reversed, this is the approach I was taking with you. Clearly the starter load was impacting the aux battery voltage reading, which you finally admitted after I simplified it by drawing a picture. To my statement "The powered electronics act as an additional voltage source...

I agree that you are difficult to communicate with. I did answer my own question and then you said you knew the answer all along but didn't want to confuse me. (edit) I do agree that I did not communicate well in this thread. Your overall point was correct, but your simple calculations didn't...

I guess you have to have a special harness or poke a hole in the wire for C.

You've certainly been posting lots of documents, but if the documents don't agree with what I'm seeing, I have to work through why they don't agree. Especially when we didn't have all this information 7 years ago and the explanation we did have doesn't agree with the documents either. I reread...

I'm glad you finally agree with point I've been making all along, that the aux battery voltage pattern on your oscilloscope image follows the pattern of powering the starter. I appreciate the time your are putting into this, but it would have saved a lot time if you would have attributed that...

It's 1. If there is a residual charge in the system electronics, then the voltage you are reading for the aux battery could be wrong. For example, when I'm driving, my system voltage is frequently in the mid 14 volt range. When an ESS event is triggered, the voltage starts around 14v and...

That explanation isn't valid because your voltage reading is taken from between the electronics and the aux battery and can't be used to calculate the current from the aux battery to the starter. Your calculation doesn't take account of the multiple voltage sources. I'm perfectly willing...

Consider these points. This text states that before every key start, the system is tested to see if the aux battery can power the PCM after the batteries are separated. If the aux battery can't power the PCM, ESS is disabled. This testing validates that the batteries are separated during an...

What scope is it? For $80 I'd seriously consider getting one.

The characteristics of the system change between the cold start and the restart. The powered electronics act as an additional voltage source that can account for the voltage difference on the restart. How do you account for the similarity in the shape of the wave form if the circuits are...

I ended up removing the skid plate brackets to get access to the sway bar mounting bolts. My recollection is that your skid plate brackets aren't as easily removable, so you might want to take a look to see if you can even get the sway bar bolts out. Otherwise it could be a spring project...

I installed my Rubicon sway bar with the EVO manual disconnect.

The early JL Wranglers seemed to have a high failure rate for the LSD, the symptom was making noise. I was kind of relieved when my early JT Gladiator Max Tow didn't come with an LSD, especially since BLD mitigates the benefit somewhat.

Thanks Bill for the work on what's powered from which battery. Did you happen to see what powers the coils and injectors? I also over the past few months ran the N1, N2 during an ESS stop voltage test and got pretty much the same result of consistent voltage drops between the two. I ran the...

Reply or not as you see fit, I am replying to your post for the benefit of anyone else following this thread. From #4 on, if the aux battery was only powering the electronics and accessories the voltage would be flat because that is a constant load. Instead the voltage of the aux battery is...

Cold start Restart I believe that there is agreement that for a cold start, both the aux battery and main battery power the starter. If you look at the cold start image and the restart image, they are virtually identical except for the offset of the aux battery voltage on the restart image...